Posts

Hello folks. Today, I would like to show you a small script. It installs Java JDK, both version, x86 and 64 bit, silently, and wait for that process to finish. The wait is necessary because /s on a java install has the nasty habit of running in the background. If you are using a .bat file, you shouldn’t, than you would use something like: start /w jdk-setup.exe /s. This gets it done, but is ugly. Also, if you are using Packer and PowerShell provisioning, you might want to set up some environment variables as well for the next script. And you want that property to be available and you don’t want to mess it up with setting a path into a file and then re-setting your path on the begin of your other script. Or pass it around with Packer. No. Use a proper PowerShell script. Learn it. It’s not that hard. Be a professional. Don’t hack something together for the next person to suffer at. ...

Hello folks. Today, I would like to write about something close to my heart recently. I’ve been fiddling with Packer, Windows and Vagrant these days. Trying to get a Windows box up in running is a pain in the arse though, so I thought I share my pain with you nice folks out there. Let’s begin. ...

Hello folks. Today, I would like to write about something interesting and close to me at the moment. I’m going to setup Go.cd with Docker, and I’m going to get a Ruby Lotus app running. Let’s get started. ...

Hello folks. So, some of you know puppet, some of you don’t. Puppet is a configuration management system. It’s quite awesome. I like working with it. One of the benefits of puppet is, that I never, ever, EVER have to setup a new laptop from scratch, EVER again. I’m writing a puppet manifest file which sets up my new laptop to my liking. I will improve it as I go along. Here is version 1.0. ...

Fact is, I’ve been busy. I’ve got a new job as a build engineer. As sort of a devops kind of guy. It’s extremely interesting considering that I made a career as a tester. Granted, I always was technical, and never really knew my path; but it seems my path is finding me after all. In the past years, I got better at Docker, Puppet, Chef, AWS, Packer, Vagrant, Gradle, and a hell of a lot more. Also honed my linux skills from the ability of doing an ls -l to do an find . -type f -atime +5 | xargs rm -fr (find all the files which are 5 days older and pipe them to a delete command). I already read many books about devops but this time, it’s different. This time, I can actually do these things as well in a live environment. ...

Hello folks. A small update to this. I created the model now, which is the database design for this app. It’s very simple, nothing fancy. Also, I’m writing the app with Python 3 from now on. Here is the model now: from django.db import models from django.contrib.auth.models import User # Create your models here. class Item(models.Model): name = models.CharField(max_length=100, default="Item") damage = models.IntegerField(default=) defense = models.IntegerField(default=) consumable = models.BooleanField(default=False) def __str__(self): return self.name class Inventory(models.Model): items = models.ManyToManyField(Item) def __str__(self): return self.items class Character(models.Model): # By default Django uses the primery key of the related object. # Hence, no need to specify User.id. user = models.OneToOneField(User, null=True) name = models.CharField(max_length=100) inventory = models.ForeignKey(Inventory) def __str__(self): return self.name Worth noting a few things here. The __str__ is only with Python 3. In Python 2 it would be unicode. And the OneToOne and the foreign key are automatically using Primary keys defined in the references model. The __str__ is there to return some view when you are debugging in the console instead of [<Item: Item object>]. ...

Hello. Continuing where we left off with the Django RPG project. Next up is implementing a rudimentary registration and adding the ability to create a character. Maybe even, design the database through django’s modelling. ...

Hi folks. So last time, we tried to implement a little RPG of mine using Meteor, which failed miserably. This time we are going to try and use Django. Let’s have at it, shall we? ...

Hi folks. Just a small script which calculates your distance from a lever focal point if you know your weight, the object’s weight and the object’s and the distance the object has from the focal point of the lever. Like this: This script will give you D1. And this is how it will look like in doing so: So, in order for me (77kg) to lift an object of 80kg which is on a, by default, 1 meter long lever, I have to stand back ~1.03meters. Which is totally cool, right? ...

Let’s talk about plans. It’s good to have one. For example, I have a plan for this year. I kind of like math. So, I have this book: It’s 1400 pages long and basically, has everything in it. It’s a rather exhaustive book. Hence, my plan is to finish the book by the end of 2015 and write a couple of python scripts that calculate something interesting. (2021 Hindsight): Yeah, I didn’t manage this… But it’s a cool idea, let’s see if I can get around coming further. I managed to get until 500 pages or so, before life stepped in. ...